Step-by-step explanation:
1/a = 1/b + 1/c
Multiply both sides by a.
1 = a/b + a/c
Multiply both sides by b.
b = a + ab/c
Multiply both sides by c.
bc = ac + ab
Subtract ab from both sides.
bc − ab = ac
Factor b.
b (c − a) = ac
Divide both sides by c − a.
b = ac / (c − a)
So if we do 60,000*0.18=10,800 which is the number the price will decrease annually.
1=49,200
2=38,400
3=27,600
4=16,800
:D Hope this helps!
812 is around 800, so lets change the equation to 800x2, which is 1600. Therefore, we would estimate 812x2 as A)1600
Hope this helps!
Answer
:
(P+5)/2-3a=b
((P+5)/2 -b)/3=a
Step-by-step explanation:
P+5=6a+2b
Factorize
P+5=2(3a+b)
(P+5)/2=3a+b
((P+5)/2)-b)/3=a
(P+5)/2)-3a=b
Hey!
2x + 4y = 3x + 3y = 13
2x + 4y = 13 ------------ ( 1 )
3x + 3y = 13 -------------- ( 2 )
Now, we will need to eliminate one type of the term , let us eliminate the x terms
Let us multiply the first equation with 3 and the second equation with 2
3 ( 2x + 4y ) = 3 ( 13 )
2 ( 3x + 3y ) = 2 ( 13 )
................................................................................................................................................
6x + 12y = 39 ----------------- ( 1 )
6x + 6y = 26 ---------------------- ( 2 )
Now, let us subtract the second equation from the first equation
6x + 12y = 39
-6x - 6y = - 26
.........................................
6y = 13
y = 13 / 6
...........................................
Now substitute the value of ' y ' and we can get the value of ' x '
I will take 3x + 3y = 13
3x + ( 3 ) ( 13 / 6 ) = 13
3x + 13 / 2 = 13
3x = 13 - 13/2
LCM = 2
3x = 26 - 13 / 2
3x = 13 / 2
x = 13/2 / 3
x = 13/2 × 1/3
x = 13/6
Hope my answer helps!